OMRON Power Other Temperature Alarm K8DT-TH K8DT-TH Data Sheet
Summary
Monitor temperatures and prevent equipment overheating with this reliable relay system. Designed for safe industrial operations, it allows precise digital setting of temperature ranges using thermocouples or platinum resistance thermometers. Featuring compact construction, multiple output options, and integrated push-in terminals, the unit simplifies wiring in panels. This manual provides detailed model selection, specifications, electrical ratings, and installation guidelines necessary for professional engineers and technicians implementing critical temperature control solutions.
Page 1 Text Content
New Product
Temperature Monitoring Relay K8DT-TH Ideal to prevent heater overheating. Self-latching output to contribute to safe equipment operation. Set the temperature with ultra-simple rotary switches. Digitally set the temperature to between 0 and 999°C in 1°C increments with one Relay (K8DT-TH1@@). (K8DT-TH2@@: Set to between 0 and 1,800°C in 10°C increments.) Connect a thermocouple or platinum resistance thermometer. Width of 17.5 mm to reduce space required in panels. Push-In Plus Terminal that reduce wiring work. The use of cage clamps enables wiring with bare stranded wires.
For the most recent information on models
Double-insertion holes for crossover wiring (all terminals).
that have been certified for safety UL listed for easy shipping to North America. standards, refer to your OMRON website.
Models added with transistor outputs for superior contact reliability.
Refer to Safety Precautions on page 9.
Ordering Information Temperature Input Models Power supply
Input types Setting units (setting range) Output relays Type Model
voltage
Relay: SPDT contact output K8DT-TH1CD
24 V AC/DC
Thermocouple or Transistor K8DT-TH1TD
Setting unit: 1°C or 1°F
platinum resistance
(0 to 999°C/°F)
thermometer Relay: SPDT contact output K8DT-TH1CA
100-240 V AC
Transistor K8DT-TH1TA
Relay: SPDT contact output K8DT-TH2CD
24 V AC/DC
Transistor K8DT-TH2TD
Thermocouple Setting unit: 10°C/°F *
Relay: SPDT contact output K8DT-TH2CA
100-240 V AC
Transistor K8DT-TH2TA
Refer to Setting Ranges on page 3 for the setting ranges.
Options (Order Separately) Front Cover Appearance Model
Page Summary Contents For OMRON Power Other Temperature Alarm K8DT-TH K8DT-TH Data Sheet
Manual Details
| Brand | Omron |
|---|---|
| Pages | 14 |
| File Size | 3.17 MB |
| Published | June 04, 2026 |
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Frequently Asked Questions
What temperature ranges are available?
There are models for 1°C increments up to 999°C, or higher range options like K8DT-TH2 supporting 0 to 1,800°C in 10°C increments.
How can I connect a temperature sensor?
You can connect either a thermocouple (K, J, T, E; standards) or a platinum resistance thermometer such as Pt100.
What physical features aid installation?
The unit is narrow at 17.5 mm and includes Push-In Plus Terminals with cage clamps for wiring bare stranded wires.
Is the device safety certified for North America?
Yes, the product is UL listed, making shipping to North America easy.